// 网络服务实现

use log::info;
use crate::core::{Service, ServiceStatus};

/// 网络服务
pub struct NetworkService {
    status: ServiceStatus,
}

impl NetworkService {
    pub fn new() -> Result<Self, String> {
        Ok(NetworkService {
            status: ServiceStatus::Stopped,
        })
    }

    /// 创建网络连接
    pub fn create_connection(&self, address: &str, port: u16) -> Result<NetworkConnection, String> {
        info!("Creating network connection to {}:{}", address, port);
        // 这里实现网络连接创建逻辑
        Ok(NetworkConnection::new())
    }

    /// 发送数据
    pub fn send_data(&self, _connection: &NetworkConnection, data: &[u8]) -> Result<usize, String> {
        info!("Sending {} bytes of data", data.len());
        // 这里实现数据发送逻辑
        Ok(data.len())
    }

    /// 接收数据
    pub fn receive_data(&self, _connection: &NetworkConnection, _buffer: &mut [u8]) -> Result<usize, String> {
        info!("Receiving data");
        // 这里实现数据接收逻辑
        Ok(0)
    }

    /// 关闭连接
    pub fn close_connection(&self, _connection: NetworkConnection) -> Result<(), String> {
        info!("Closing network connection");
        // 这里实现连接关闭逻辑
        Ok(())
    }

    /// 获取网络接口信息
    pub fn get_network_interfaces(&self) -> Result<Vec<NetworkInterface>, String> {
        // 这里实现获取网络接口逻辑
        Ok(Vec::new())
    }
}

impl Service for NetworkService {
    fn name(&self) -> &'static str {
        "network"
    }

    fn start(&mut self) -> Result<(), String> {
        info!("Starting Network Service");
        self.status = ServiceStatus::Starting;
        
        // 这里可以添加网络服务启动逻辑
        // 例如：初始化网络协议栈、配置网络接口等
        
        self.status = ServiceStatus::Running;
        info!("Network Service started successfully");
        Ok(())
    }

    fn stop(&mut self) -> Result<(), String> {
        info!("Stopping Network Service");
        self.status = ServiceStatus::Stopping;
        
        // 这里可以添加网络服务停止逻辑
        // 例如：关闭所有连接、清理资源等
        
        self.status = ServiceStatus::Stopped;
        info!("Network Service stopped successfully");
        Ok(())
    }

    fn status(&self) -> ServiceStatus {
        self.status.clone()
    }
}

/// 网络连接
#[derive(Debug, Clone)]
pub struct NetworkConnection {
    id: u64,
    address: String,
    port: u16,
    is_connected: bool,
}

impl NetworkConnection {
    pub fn new() -> Self {
        static NEXT_ID: std::sync::atomic::AtomicU64 = std::sync::atomic::AtomicU64::new(1);
        NetworkConnection {
            id: NEXT_ID.fetch_add(1, std::sync::atomic::Ordering::Relaxed),
            address: "localhost".to_string(),
            port: 8080,
            is_connected: false,
        }
    }

    pub fn id(&self) -> u64 {
        self.id
    }

    pub fn address(&self) -> &str {
        &self.address
    }

    pub fn port(&self) -> u16 {
        self.port
    }

    pub fn is_connected(&self) -> bool {
        self.is_connected
    }
}

/// 网络接口信息
#[derive(Debug, Clone)]
pub struct NetworkInterface {
    pub name: String,
    pub ip_address: String,
    pub netmask: String,
    pub mac_address: String,
    pub is_up: bool,
}

impl Default for NetworkInterface {
    fn default() -> Self {
        NetworkInterface {
            name: "eth0".to_string(),
            ip_address: "127.0.0.1".to_string(),
            netmask: "255.255.255.0".to_string(),
            mac_address: "00:00:00:00:00:00".to_string(),
            is_up: true,
        }
    }
}

/// 网络协议栈
pub struct NetworkProtocolStack {
    protocols: Vec<NetworkProtocol>,
}

impl NetworkProtocolStack {
    pub fn new() -> Self {
        NetworkProtocolStack {
            protocols: Vec::new(),
        }
    }

    pub fn add_protocol(&mut self, protocol: NetworkProtocol) {
        self.protocols.push(protocol);
    }

    pub fn process_packet(&self, _packet: &[u8]) -> Result<(), String> {
        // 这里实现数据包处理逻辑
        Ok(())
    }
}

/// 网络协议
pub struct NetworkProtocol {
    pub name: String,
    pub version: String,
    pub handler: Box<dyn Fn(&[u8]) -> Result<(), String>>,
}